This Karen Millen black and red dress decorated with poppies was not involved.
The Chicago U.S. Customs and Border Protection International Mail Facility in Chicago received a batch of 65 "Traditional Dresses" coming from Laos. Paperwork and X-rays showed nothing out of the ordinary, but a narcotics detector dog noticed otherwise. All the dresses had been soaked in opium.
Obviously, the dresses would have needed to be washed of that pesky substance before they were worn.
CBP K-9 Finds Pretty Dresses Saturated With Opium, Imperial Valley News>>